The collision between U.S. and Russian communication satellites this week the first such crash in space has created speeding clouds of debris that threaten other unmanned spacecraft in nearby orbits, Russian officials and experts said Thursday.

A Soyuz capsule carrying an American and two Russians touched down on target in Kazakhstan on Friday after a descent from the international space station, safely delivering the first two men to follow their fathers into space.

A Soyuz capsule carrying an American and two Russians touched down on target in Kazakhstan on Friday after a descent from the international space station, safely delivering the first two men to follow their fathers into space.

A Russian capsule carrying South Korea's first astronaut touched down 260 miles off target in northern Kazakhstan on Saturday after hurtling through the atmosphere in a bone-jarring descent from the international space station.

A Russian capsule carrying South Korea's first astronaut touched down 260 miles off target in northern Kazakhstan on Saturday after hurtling through the atmosphere in a bone-jarring descent from the international space station.

A Russian Soyuz spacecraft carrying South Korea's first astronaut docked successfully at the international space station on Thursday. Yi So-yeon, a South Korean bioengineer, and cosmonauts Sergei Volkov and Oleg Kononenko hooked up with the orbiting station two days after its launch from the Baikonur cosmodrome.